ABC on Thursday aired the official promo for the milestone hour — following one of the craziest episodes in recent history — giving us our first look at the show’s big “what if?” episode, which explores what might have happened if Olivia & Co. hadn’t fixed the election all those years ago.

Though the video is only 20 seconds long, it features a handful of blink-and-you-missed-them moments, including the wedding of one Olivia Pope. The groom, naturally, is left up to our imagination — but did you really expect the promo to spoil everything? (FYI, we curated all of those moments in this gallery in case you’d like to take a longer look.)